Advances and challenges in modeling high-speed turbulent combustion in propulsion systems. (May 2017)

• Record Type: Journal Article
• Authors: Gonzalez-Juez, Esteban D.; Kerstein, Alan R.; Ranjan, R.; Menon, S.
• Is Part Of: Progress in energy and combustion science. Volume 60(2017:Jun.)
• Page Start: 26
• Page End: 67
• Publication Date: 2017-05
• Subjects: Turbulent combustion -- High-speed flow -- Supersonic combustion -- Distributed reaction -- Computational fluid dynamics; Combustion -- Periodicals; Power (Mechanics) -- Periodicals; Combustion engineering -- Periodicals; 621.4023
• DOI: 10.1016/j.pecs.2016.12.003
• Languages: English
• ISSNs: 0360-1285

Abstract

Abstract: Combustion environments in propulsion systems involve the interaction of a variety of physics. In devices such as augmentors, ramjets and scramjets, such environments include the interaction between combustion, high-intensity turbulence, and/or strong flow compressions and expansions, physics which are termed here high-speed combustion. With this motivation in mind, this paper addresses: What are the problems encountered when modeling these interactions, or in other words, what are the problems of turbulent-combustion modeling? Do such interactions need modeling? What are the challenges when going from modeling low-speed- to high-speed-combustion problems? This work addresses these questions by summarizing several modeling studies of gaseous high-speed-combustion problems, and attempts to interpret some predictions in the context of the models' basic assumptions. Interestingly, the challenges to model high-speed combustion are such that a reader not interested in this topic but in the general one of modeling turbulent combustion may find the present paper useful.